Making sense of the Variant
From filmstandards.org
En 15907 provides a very general definition for the optional Variant entity. While the decision about when and how to use this decription level falls into the domain of cataloguing, some semantic clarification will also be needed at the level of metadata modelling.
Here are some cases that may require more guidance than what is given by the current definition of Variant:
Case 1: A Manifestation not belonging to a known Variant
Case 2: Several Variants from a single production event